75354121 has 2 divisors, whose sum is σ = 75354122. Its totient is φ = 75354120.

The previous prime is 75354119. The next prime is 75354137. The reversal of 75354121 is 12145357.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67059721 + 8294400 = 8189^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 75354121 - 2¹ = 75354119 is a prime.

Together with 75354119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 75354121.

It is not a weakly prime, because it can be changed into another prime (75304121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37677060 + 37677061.

It is an arithmetic number, because the mean of its divisors is an integer number (37677061).

Almost surely, 2^75354121 is an apocalyptic number.

It is an amenable number.

75354121 is a deficient number, since it is larger than the sum of its proper divisors (1).

75354121 is an equidigital number, since it uses as much as digits as its factorization.

75354121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 28.

The square root of 75354121 is about 8680.6751465540. The cubic root of 75354121 is about 422.3790179145.

Adding to 75354121 its reverse (12145357), we get a palindrome (87499478).

The spelling of 75354121 in words is "seventy-five million, three hundred fifty-four thousand, one hundred twenty-one".